Afather is 60 years old and his son is half his age. how old was the boy when his father was four times his age?

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

What is the solution to the equation e3x=12? round your answer to the nearest hundredth

Why is it so easy to buy on impulse and overspend with a credit card? what could you do to counteract this tendency?